Variability studies of okra (Abelmoschus esculentus L. Moench) F4 population for yield and yield related traits

The present investigation was carried out to understand the extent of genetic variability between yield and its traits in F4 segregating populations of the three bi-parental crosses viz., IIHR-875 × IIHR-478, IIHR-478 × IIHR-567 and IIHR-604 × IIHR-347 at ZAHRS, Babbur Farm, Hiriyur during 2023-24. The statistical design augmented design was followed to analyse the different traits. In F4 segregating population of the bi-parental cross IIHR-875 × IIHR-478 recorded high GCV and PCV values for first fruit producing node. Whereas in F4 populations of the bi-parental cross IIHR-478 × IIHR-567 exhibited moderate GCV and high PCV values for number of branches per plant. With regard to F4 populations of the bi-parental cross IIHR-604 × IIHR-347 shown high PCV and GCV values for plant height and total yield per plant. The higher heritability coupled with high genetic advance as per cent of mean was observed for inter nodal length, first fruit producing node, fruit length, fruit length and total yield per plant in the F4 populations of the bi-parental cross IIHR-875 × IIHR-478. Whereas in F4 populations of the bi-parental cross IIHR-478 × IIHR-567 exhibited high heritability with high genetic advance as per cent of mean for first fruit producing node. With regard to F4 populations of the bi-parental cross IIHR-604 × IIHR-347 manifested moderate heritability with high genetic advance as per cent of mean for number of branches per plant.